For thousands of years, mankind has produced plants and animals to create more desired and useful plants and animals. For example, modern com has been produced to such a large size that it is no longer able to reproduce without man’s assistance. Modern dairy cows produce too much milk and if they are not often emptied of milk, they could leak, burst, become infected, and possibly die. Besides, most dogs raised by people can not survive in the wild even with special training.
Since natural evolution is extremely slow and mankind’s selective production programs only take a few generations to produce a completely new species, natural evolution has already taken a back seat to mankind’s production programs. In addition, mankind has successfully killed off several species all together. For example, there are no more European wolves in existence and mammoths (猛犸象) probably died out because of mankind. Even certain diseases have been permanently got rid of from the planet, and dozens of other diseases will soon be too. Again, natural evolution did i»t cause most of the destruction during man’s rule of the world.
Currently, scientists are creating new species with desired characteristics in the lab significantly faster than natural evolution creates new species. In a single generation, new species can be created and destroyed by mankind, while natural evolution could take thousands of years to do the same but only accidentally. Scientists are even able to replace defective (有缺陷的) or damaged genes with different genes to attempt to cure genetic defects. This is something that natural evolution could possibly never correct.
Eventually scientists will even be able to improve the quality of people. For example, imagine not only correcting your eyesight with gene treatment, but also ensuring that all of your children do not receive your old genes of poor eyesight too. Scientists will one day be able to improve the memory and intelligence of your children, so that they will do better in school and achieve more in life. Doctors and scientists will be able to customize (订制) babies before they are born just like picking options at a car store.
1.According to the first paragraph,______ .
A. man-made evolution has improved all species
B. man-made evolution has weakened some species
C man-made evolution can make up for all natural losses
D. natural evolution won’t happen without man’s assistance
2.What does the underlined part “taken a back seat to” in Paragraph 2 mean?
A. Become powerful assistance to.
B. Become a huge barrier to.
C Speeded up the process of.
D. Played a less important role than.
3.What does the third paragraph mainly talk about?
A. Why natural evolution happens so slowly.
B. The way scientists adopt to have genetic defects repaired.
C. The advantages of man-made evolution over natural evolution.
D. How scientists make use of man-made evolution to create new species.
4.What can we infer from the passage?
A. Near-sighted parents will be able to produce babies with good eyesight in the future.
B. Doctors and scientists will be responsible for mass production of babies in the future.
C. It is natural evolution that is to blame for the destruction of European wolves and mammoths.
D. Children can now have their memory and intelligence improved with the help of gene treatment.
高二英语阅读理解中等难度题
For thousands of years, mankind has produced plants and animals to create more desired and useful plants and animals. For example, modern com has been produced to such a large size that it is no longer able to reproduce without man’s assistance. Modern dairy cows produce too much milk and if they are not often emptied of milk, they could leak, burst, become infected, and possibly die. Besides, most dogs raised by people can not survive in the wild even with special training.
Since natural evolution is extremely slow and mankind’s selective production programs only take a few generations to produce a completely new species, natural evolution has already taken a back seat to mankind’s production programs. In addition, mankind has successfully killed off several species all together. For example, there are no more European wolves in existence and mammoths (猛犸象) probably died out because of mankind. Even certain diseases have been permanently got rid of from the planet, and dozens of other diseases will soon be too. Again, natural evolution did i»t cause most of the destruction during man’s rule of the world.
Currently, scientists are creating new species with desired characteristics in the lab significantly faster than natural evolution creates new species. In a single generation, new species can be created and destroyed by mankind, while natural evolution could take thousands of years to do the same but only accidentally. Scientists are even able to replace defective (有缺陷的) or damaged genes with different genes to attempt to cure genetic defects. This is something that natural evolution could possibly never correct.
Eventually scientists will even be able to improve the quality of people. For example, imagine not only correcting your eyesight with gene treatment, but also ensuring that all of your children do not receive your old genes of poor eyesight too. Scientists will one day be able to improve the memory and intelligence of your children, so that they will do better in school and achieve more in life. Doctors and scientists will be able to customize (订制) babies before they are born just like picking options at a car store.
1.According to the first paragraph,______ .
A. man-made evolution has improved all species
B. man-made evolution has weakened some species
C man-made evolution can make up for all natural losses
D. natural evolution won’t happen without man’s assistance
2.What does the underlined part “taken a back seat to” in Paragraph 2 mean?
A. Become powerful assistance to.
B. Become a huge barrier to.
C Speeded up the process of.
D. Played a less important role than.
3.What does the third paragraph mainly talk about?
A. Why natural evolution happens so slowly.
B. The way scientists adopt to have genetic defects repaired.
C. The advantages of man-made evolution over natural evolution.
D. How scientists make use of man-made evolution to create new species.
4.What can we infer from the passage?
A. Near-sighted parents will be able to produce babies with good eyesight in the future.
B. Doctors and scientists will be responsible for mass production of babies in the future.
C. It is natural evolution that is to blame for the destruction of European wolves and mammoths.
D. Children can now have their memory and intelligence improved with the help of gene treatment.
高二英语阅读理解中等难度题查看答案及解析
_____ from other continents for millions of year, Australia has many plants and animals not found in any other country in the world.
A. Being separated B. Having been separated
C. Having separated D. To be separated
高二英语单项填空中等难度题查看答案及解析
_______ from other continents for millions of years, Australia has many plants and animals not found in any other country in the world.
A.Being separated B.Having separated
C.Having been separated D.To be separated
高二英语单项填空中等难度题查看答案及解析
_________ from other continents for millions of years, Australia has many plants and animals not ________ in any other country in the world.
A.Having divided, to be found B.Having been separated, found
C.Have been separated, found D.Divided, finding
高二英语单项填空中等难度题查看答案及解析
____________ from other continents for millions of years,Austrailia has many plants and animals not found in any other country in the world.
A Being separated B Having separated C Having been separated D To be separated
高二英语单项填空中等难度题查看答案及解析
Languages have been coming and going for thousands of years, but in recent times there has been less coming and a lot more going. When the world was still populated by hunter-gatherers, small, tightly knit(联系) groups developed their own patterns of speech independent of each other. Some language experts believe that 10,000 years ago, when the world had just five to ten million people, they spoke perhaps 12,000 languages between them.
Soon afterwards, many of those people started settling down to become farmers, and their languages too became more settled and fewer in number. In recent centuries, trade, industrialization, the development of the nation-state and the spread of universal compulsory education, especially globalisation and better communications in the past few decades, all have caused many languages to disappear, and dominant languages such as English, Spanish and Chinese are increasingly taking over.
At present, the world has about 6,800 languages. The distribution of these languages is hugely uneven. The general rule is that mild zones have relatively few languages. Often spoken by many people while hot, wet zones have lots, often spoken by small numbers. Europe has only around 200 Languages: the Americas about 1,000, Africa 2,400; and Asia and the Pacific perhaps 3,200, of which Papua New Guinea alone accounts for well over 800. The median number(中位数) of speakers is a mere 6.000, which means that half the worlds languages are spoken by fewer people than that.
Already well over 400 of the total of 6,800 languages are close to extinction(消亡), with only a few elderly speakers left. Pick, at random, Busuu in Cameroon (eight remaining speakers), Chiapaneco in Mexico(150). Lipan Apache in the United States(two or three) or Wadjigu in Australia (one, with a question-mark): none of these seems to have much chance of survival.
1.What can we infer about languages in hunter-gatherer times?
A. They developed very fast. B. They were large in number.
C. They had similar patters. D. They were closely connected
2.Which of the following best explains "dominant" underlined in paragraph 2?
A. Complex. B. Advanced.
C. Powerful. D. Modern.
3.How many languages are spoken by less than 6, 000 people at present?
A. About 6,800 . B. About 3,400
C. About 2,400 D. About 1,200.
4.What is the main idea of the text?
A. New languages will be created.
B. Peoples lifestyles are reflected in languages.
C. Human development results in fewer languages.
D. Geography determines language evolution.
高二英语阅读理解困难题查看答案及解析
We human beings haven’t been good friends to animals. For thousands of years, we have been polluting the environment, making it hard for animals to live on the planet. We have been killing animals for their fur, feathers or meat, or simply because they are dangerous. As a result, many kinds of animals have disappeared forever. Hundreds more are on the endangered list today.
Should we care about animals? Of course we should. If animals of a certain kind all disappear, they will never come back again. Animals are more than just resources of things we need. Every kind of animal has its place in the balance of nature. Destroying any kind of animal can lead to many problems. For example, when farmers killed large numbers of hawks, the corn and grain that the farmers stored were destroyed by rats and mice. Why? Because hawks eat rats and mice. With less and less hawks to keep down their numbers, rats and mice multiplied quickly. And if people kill too many birds, more and more insects will eat the crops.
Luckily, we’ve realized that we shouldn’t kill animals any more. And people are working hard to save those animals that would disappear soon. The government also passed laws to protect the endangered animals. In fact, quite a few countries have passed such laws. These laws forbid the killing of any kind of animal on the endangered list. We should try our best to protect and save the endangered animals.
1.The text calls on us to__________.
A.keep animals at home B.protect the environment
C.protect the endangered animals D.know more about the balance of nature.
2.Why do people kill animals?
A.Animals cause many serious problems.
B.They kill animals for something they need.
C.Animals destroy their natural resources.
D.They kill animals to protect the environment
3.The example that farmers killed hawks shows that__________.
A.there were too many rats and mice
B.hawks are the most important in the nature
C.animals are good food resources
D.every kind of animal is important in nature
高二英语阅读理解中等难度题查看答案及解析
Lee Humberg, district manager for the U.S. Department of Agriculture’s Animal and Plant Health Inspection Service, is the man in charge of figuring out how to remove the flocks (群) of 15,000 to 20,000 Canada geese(大雁) that could strike planes flying in and out of the New York area. The Port Authority, the agency that manages airport in New York and New Jersey, estimates that there have been as many as 315 bird strikes annually in the past 30 years.
Bird strikes have been a hot topic since a US Airways jet suffered a “double strike” and made an emergency landing on the Hudson River in January 2009. All 155 passengers were rescued safely and the flight was called “Miracle on the Hudson”. The plane finally ended up at the Carolinas Aviation Museum. The next major bird strike may not have such a happy ending.
To thin the flocks, Humberg and his team have tracked down goose nests and killed eggs with corn oil. They’ve also terrified the birds with dogs, remote-controlled boats and kites that look like eagles. But the only method that effectively decreases the goose population is the one that angers animal lovers the most: gassing hundreds at a time.
“If all you are doing is goose harassment (骚扰) every day, it’s very frustrating, because you are just playing Ping-Pong with the birds,” Humberg told New York magazine. “It’s basically an arms race to come up with the tools to deal with them.”
Now New York City plans to send the geese captured to Pennsylvania to be cooked and distributed at food banks as meals for the poor. That might just be a fate better than flying into a 747 engine.
1.What can we learn form Humberg?
A. He does research on geese’s living conditions.
B. He makes efforts to protect wild birds.
C. He deals with the danger of birds at airports.
D. He tries to find newer and safer airlines.
2.Why was the flight called “Miracle on the Hudson”?
A. It suffered a “double strike”. B. It arrived at a plane museum.
C. It only caused a few deaths. D. It succeeded in landing on a river.
3.By saying “you are just playing Ping-Pong with the birds”, Humberg means ______.
A. It’s interesting to fight with the birds
B. It’s a skill-needed race against the birds
C. you can’t defeat the bird in the end
D. you should live with birds peacefully
4.It can be inferred from the passage that ______.
A. Canada geese can fly as high as planes
B. New York airlines are in poor management
C. bird strikes happen once a week on average
D. the poor may also benefit from Humberg’s work
高二英语阅读理解中等难度题查看答案及解析
For thousands of years, man has enjoyed the taste of apples. Apples, which are about 85 percent water, grow almost everywhere in the world but the hottest and coldest areas (地区). Among the leading countries in apple production are China, France and the United States.
There are various kinds of apples, but a very few make up the majority of those grown for sale. The three most common kinds grown in the United States are Delicious, golden Delicious, and McIntosh.
Apples are different in colour, size, and taste. The colour of the skin may be red, green, or yellow. They have various sizes, with Delicious apples being among the largest. The taste may be sweet or tart (酸的). Generally, sweet apples are eaten fresh while tart apples are used to make applesauce (苹果酱).
Apple trees may grow as tall as twelve metres. They do best in areas that have very cold winters. Although no fruit is yielded during the winter, this cold period is good for the tree.
1.It can be learned from the text that delicious apples are _______________
A.grown in France. | B.sold everywhere. | C.very big. | D.quite sweet. |
2.Cold winter weather is good for _______________
A.the growth of apple trees. | B.producing large apples. |
C.improving the taste of apples. | D.the increase of water in apples. |
3.China, France and the United States are considered to _______________
A.be large producers of apples. | B.be large producers of applesauce. |
C.have the longest history in apple production. | |
D.have the coldest winter among apple producing countries. |
高二英语阅读理解中等难度题查看答案及解析
India is a developing country. It has thousands of years of tradition and culture. Different types of people live in India. In the old days the educational institutions (教育机构) were called "ashramam" and teachers were "gurus". A guru was a respected person in society.
Now we are living in the technological world. Big changes are occurring in people’s living. The influence of television, telephone, radio, computer, Internet and mobile phones is very strong in everyday life. But even today, teachers are role models for students. Teaching is still a respectable job. But there are great changes in the education system.
One of the most obvious changes is that the influence of Western culture has increased. We are paying too much attention to doing business, just like the Western world. Teachers are likely to be influenced by this too, but it is not good. Teachers are nation builders. The development of any country depends upon its education system. All types of development are possible through education.
Another change has happened in the curriculum. The curriculum connects the teacher and the student. While education is about learning, curriculum means the situations in which one learns. When we say that education deals with "what", then curriculum deals with "how" and "when". But at the moment, it is hard to say whether the curriculum is playing such a role.
1.In India, an ashramam was _________.
A.a teacher who was respected by people B.a person who worked for the government C.a place where students were taught D.a place where tradition and culture developed
2.Which of the following is NOT a reason to change people’s lives in India?
A.TV. B.Computer. C.Mobile phones. D.Tradition.
3.In modern society, teaching is considered as a job that __________.
A.is respected B.brings good luck C.is hopeless D.connects with the fashion
4.What is the author’s attitude towards educational change in India?
A.He likes it. B.He is annoyed at it. C.He is indifferent (冷漠的)to it. D.He is worried about it.
高二英语阅读理解中等难度题查看答案及解析